There are actually at least four species within Dicrossus. Dicrossus filamentosus is the only regularly commercially available species. Dicrossus maculatus has only been available on a limited basis from specialized importers for many years. Recently, a couple other species have started to pop up--D. sp. "Tapajos", which you also see pictured with my macs (they have the narrow check-marks instead of square spots), and also a D. sp. "Rio Negro". I have kept and bred filamentosus and maculatus, but I have yet to find females for the Tapajos. Actually the tapajos were a lucky by-catch with the maculatus, so I wasn't actually able to order them. They all tend to be pretty peaceful fish and do best with non-aggressive, less-boisterous fishes.